Green Papaya fruit and papaya leaves (and seeds) share a set of enzymes called papain and chymopapain. These substances are so powerful that they have been commercially fermented and then marketed as healing for HIV, Cancer, Parkinson’s, Cyanocobalamin absorption in alcoholics and more.
Sun O in Japan offers a product named Bionormalizer.
Rochway, AU offers
Osato Japan offers
Innun’ Age F.P.P.